re: ACTION-2278 Review the Screen Fold API

I reviewed the Screen Fold API
<https://www.w3.org/WAI/WCAG21/Understanding/orientation.html> working
draft for task 2278 <https://www.w3.org/WAI/APA/track/actions/2278>. I have
the following comments:

   1. Per previous discussions, I'd prefer to see summary accessibility
   considerations organized under a heading at the same level as Security and
   Privacy Considerations.
   2. In the Accessibility Considerations section, I would like to see an
   extrapolation of 1.3.4 Orientation
   <https://www.w3.org/WAI/WCAG21/Understanding/orientation.html> applied
   to device posture until it can be addressed in those documents. For
   example, "Content does not restrict its view and operation to a single
   display orientation <https://www.w3.org/TR/screen-orientation/> or
   single device posture <https://www.w3.org/TR/screen-fold/#posture-modes>,
   unless a specific display arrangement is essential
   <https://www.w3.org/WAI/WCAG21/Understanding/orientation.html#dfn-essential>
   ."

Thanks,
*--*
*Paul Grenier*
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